Recognised as Colour

#B27539

#B27539
Orange
Dark
Nearest: Peru

#B27539 is a orange with RGB values 178, 117, 57 and HSL 30°, 51%, 46%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Peru.

Colour values

#B27539#B27539

HEX#B27539

RGBrgb(178, 117, 57)

RGB (0–1)0.698, 0.4588, 0.2235

RGB percentages69.8%, 45.9%, 22.4%

HSLhsl(29.8, 51.5%, 46.1%)

HSV / HSBhsv(29.8, 68%, 69.8%)

CMYK0%, 34.3%, 68%, 30.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,695,417

CSS custom property--colour: #B27539;

Brightness & contrast

Relative luminance0.22483WCAG 2.x, 0 is black and 1 is white

Perceived brightness133.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.5:1

Contrast with white3.82:1WCAG normal text: Fail

Contrast with black5.5:1WCAG normal text: AA

Greyscale equivalent#7E7E7E

Inverted#4D8AC6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#887A33no red cones; affects about 1% of men; ΔE 22.5 from the original

Deuteranopia#97883Ano green cones; the most common form, about 1% of men; ΔE 22.7 from the original

Tritanopia#C26768no blue cones; rare, and affects men and women equally; ΔE 31.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.82:1WCAG large text: AA

Contrast with black, large text5.5:1WCAG large text: AAA

Named colours

Peru · ΔE 9.8 Sienna · ΔE 16.7 Saddle brown · ΔE 18.9 Sandy brown · ΔE 20.6 Dark goldenrod · ΔE 22.9 Dark salmon · ΔE 23.2

Nearest named CSS colourPeru (#CD853F)ΔE 9.84, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#3976B2

Analogous#B23939, #B2B139

Triadic#39B275, #7539B2

Split complementary#39B2B2, #3939B2

Tetradic#3AB239, #3976B2, #B239B2

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#EEDBC9

Lighter +30%#E1C2A3

Lighter +20%#D5A87C

Lighter +10%#C98F55

Darker −10%#8B5C2D

Darker −20%#654220

Darker −30%#3E2914

Darker −40%#170F08

More saturated +25%#CF751C

Less saturated −25%#957556

Channel breakdown

R178

G117

B57

Red178 (69.8%)

Green117 (45.9%)

Blue57 (22.4%)

Hue29.75°

Saturation (HSL)51.49%

Lightness46.08%

Dominant channelRed

Hex per channelR B2 · G 75 · B 39

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B27539 (chemical formula)

Formula
297,696.59 g/mol
27539 atoms

B27539 has a molar mass of 297,696.59 g/mol, made up of 27539 atoms across 1 element: 27539 × B.

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Molar mass

Molar mass297,696.59 g/mol

Total atoms per molecule27539

Distinct elements1

Mass of one molecule4.9433682 × 10^-19 g

Molecules per gram2.0229122 × 10^18

Name

NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show

Composition by mass

B100%

Boron (B × 27539)297,696.59 g/mol, 100%

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Elements in this formula

Boron

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